Method for preventing noise generation in an electrical digitizer due to the generation of optical signals
CA 1161677 A · Owner: Arrigoni Computer Graphics, Inc. · Inventors: Arrigoni, David M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A structure for transmitting an optical signal which allows physical separation of the optical source from the point of optical output, thereby preventing noise or interference due to the optical source being located in the vicinity of sensitive electrical apparatus.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted February 7, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 7, 2001.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.